ChatGPT-maker OpenAI is pausing a multi-billion pound UK data centre project aimed at boosting its AI infrastructure, citing concerns about high energy costs and regulation.

Its project, dubbed Stargate UK, included a large data centre in north-east England and making thousands of powerful chips for AI development available as part of a partnership with tech firms Nvidia and Nscale.

The agreement came alongside a wider £31bn package of UK tech investment, lauded as a sign of the country's potential to become an "AI superpower".

But an OpenAI spokesperson said on Thursday it would only move forward with Stargate UK when the "right conditions" could "enable long-term infrastructure investment".

"We see huge potential for the UK's AI future. London is home to our largest international research hub, and we support the government's ambition to be an AI leader," an OpenAI spokesperson said in a statement.